Liquid crystal display apparatus

A liquid crystal display apparatus comprising:

• a liquid crystal display element composed of a liquid crystal layer and having a plurality of pixels arranged in a matrix form, said liquid crystal layer including liquid crystal material having a memory property and exhibiting a cholesteric phase at room temperature;
• and
• a driver for dividing one frame into at least four fields and interlace-scanning the at least four fields,
• wherein said driver drives the respective fields composing one frame so that a scanning order of the fields is non-sequential at least once;
• wherein said driver drives scanning lines by means of a driving waveform having a reset period for resetting a state of said liquid crystal material, a selection period for selecting a final display state of said liquid crystal material, and a maintaining period for establishing the state selected during the selection period;
• wherein said driver scans the scanning lines according to the following equation,
• S=a+nk
• wherein S is scanning lines to be driven on the respective fields in the plural continued scanning lines divided into plural groups according to a number of fields;
• a is variable number, an initial value of which is one, and to which one is added each time when S exceeds the number of fields;
• n is variable number, an initial value of which is zero, and to which one is added at every time of scanning on one field, and which returns to the initial value every time when S exceeds the number of fields;
• and
• k is an integer of not less than 2.

A liquid crystal display apparatus, comprising:

• a liquid crystal display element composed of a liquid crystal layer and having a plurality of pixels arranged in a matrix pattern, said liquid crystal layer including liquid crystal material having a memory property and exhibiting a cholesteric phase at room temperature;
• and
• a driver for dividing one frame into a plurality of fields and interlace-scanning the plurality of fields,
• wherein said driver drives scanning lines by means of a driving waveform having a field scanning period, said field scanning period comprising, in order, a reset period for resetting a state of liquid crystal material, a selection period for selecting a final display state of the liquid crystal material, and a maintaining period for establishing the state selected at the selection period, said driver configured to start scanning of a next field based on an end timing of a reset period of a previous field, so as to suppress generation of a stripe pattern due to black out.

A liquid crystal display apparatus comprising:

• a liquid crystal display element composed of a liquid crystal layer and having a plurality of pixels arranged in a matrix form, said liquid crystal layer including liquid crystal material having a memory property and exhibiting a cholesteric phase at room temperature;
• and
• a driver for dividing one frame into at least four fields and interlace-scanning the at least four fields,
• wherein said driver drives the respective fields composing one frame so that a scanning order of the fields is non-sequential at least once, so as to suppress generation of a stripe pattern due to black out.